Folder type mobile telephone and operating method thereof

ABSTRACT

A folder type mobile telephone and control method therefor are provided which utilize an auxiliary display unit viewable whether the folder is opened or closed. The folder type mobile telephone includes an auxiliary display unit and a main body having a main display unit. The folder type mobile telephone includes an opening at a position corresponding to the auxiliary display unit. The folder type mobile telephone may include a wheel button formed at one side of the main body to input user commands to the auxiliary display unit. A transparent window may be formed at the opening to protect the auxiliary display unit. Regardless of whether the folder is opened or closed, a user can view, and control the auxiliary display unit via wheel button inputs. Since the auxiliary display unit is formed on the main body, the relative thickness of the folder can be reduced to make the folder type mobile telephone compact.

This application is a Divisional of U.S. application Ser. No. 10/173,865filed Jun. 19, 2002, now U.S. Pat. No. 7,400,902 the entire disclosureof which is hereby incorporated by reference.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The invention relates generally to a telephone, and more particularly,to a mobile telephone and a control method therefor.

2. Background of the Related Art

A mobile telephone may be classified into either a bar type mobiletelephone where the keypad is exposed, a flip type mobile telephonewhere a cover is formed to protect the keypad, or a folder type mobiletelephone where the main body and a cover body can be folded together.The folder type mobile telephone is especially popular. Because of itsfolding design, the folder type mobile telephone is compact andlightweight making it convenient to carry. However, in the conventionalfolder type mobile telephone, the display is located on the main body ofthe mobile telephone, or on the inner surface of the cover body orfolder. Thus, once the folder type mobile telephone is folded or closed,the display is covered and hidden from view. Therefore, when the foldertype mobile telephone is closed, the display is difficult to check,making it inconvenient to check, for example, the battery charge state,time of day or whether a message has been received.

In order to solve the problem of the hidden display of the folder typemobile telephone, a second or auxiliary display unit is placed on theouter surface of the cover body or folder such that it is visible whenthe mobile telephone is closed. With such an auxiliary display unit,displayed information can be viewed even when the folder type mobiletelephone is closed.

As shown in FIGS. 1A and 1B, a conventional folder type mobile telephoneincludes a main body 10 and a folder 20 hinged at the main body 10. Thefolder 20 is rotatably mounted on a shaft in the hinge. The mobiletelephone also includes an auxiliary display unit 21 located on an outersurface of the folder 20 and a main display unit 22 located on an innersurface of the folder 20. Also included in the mobile telephone is akeypad 11 consisting of number, power and function keys, and amicrophone 12, all of which are formed on the inner surface of the mainbody 10 of the mobile telephone. During use, information entered throughthe keypad 11 may be displayed on the main display unit 22. A speaker 23is also included in the mobile telephone and is located on the innersurface of the folder 20.

In operation of the conventional mobile telephone, when the folder 20 isopened and the mobile telephone is turned on, information such asremaining battery capacity and signal reception strength may bedisplayed on the main display 22. The time of any received calls, andwhether a message has been left or received may also be displayed on themain display unit 22. Any characters or numbers entered through thekeypad 11 are also displayed. In addition, information such as a date ortime may be displayed. Thus, when the folder 20 is closed, power to themobile telephone is turned off and no information is displayed on themain display unit 22, and when the folder 20 is opened, power is turnedon and information is displayed on the main display unit 22 The mobiletelephone can also be placed in standby mode where the folder is closed,but the mobile telephone is not turned off and can still receive calls.

To augment the inaccessible main display unit 22 when the folder typemobile telephone is in standby mode, information such as receptionstrength, messages received, remaining battery capacity, or time can beviewed on the auxiliary display unit 21 located on the outer surface ofthe folder 20. Since the auxiliary display unit 21 is on the outersurface of the folder 20, the conventional folder mobile telephone ismore convenient to use because information otherwise only displayed onthe main display unit 22 can be viewed even when the folder 20 isclosed.

Due to the location of the main display unit 22 and the auxiliarydisplay unit 21 of the conventional mobile telephone, only the maindisplay unit 22 can be viewed when the holder 20 is open such as whentransmitting a short message or accessing a wireless informationnetwork. Thus, in the conventional folder type mobile telephone, sincethe main display unit 22 and the auxiliary display unit 21 are fixed onopposite surfaces of the folder, the auxiliary display unit 21 and themain display unit 22 can not be used simultaneously. Such an arrangementof the displays causes an inefficient utilization of the mobiletelephone components. Another problem with the conventional arrangementof the two displays in the conventional folder type mobile telephone isdue to the main display unit 22 and the auxiliary display unit 21 beingrespectively attached to the inner surface and the outer surface of thefolder 20. Accordingly, the folder 20 must be relatively thick makingthe mobile telephone less compact.

SUMMARY OF THE INVENTION

An object of the invention is to substantially solve one or more of theabove problems and/or disadvantages in a whole or in part and to provideat least the advantages described hereinafter.

Another object of the invention is to provide a folder type mobiletelephone or mobile telephone and a controlling method thereto that arecapable of allowing a user to view an auxiliary display unit whether themobile telephone's folder is opened or closed.

In order to achieve at least the above objects in whole or in part, andin accordance with the purposes of the invention as embodied and broadlydescribed, there is provided a folder type mobile telephone including amain body having a display unit, and a folder rotatably or hingedlyattached onto the main body having an opening or cut-out allowing thedisplay unit on the main body, to be viewed when the folder is closed.

To further achieve at least the above objects in whole or in part, andin accordance with the purposes of the invention as embodied and broadlydescribed, there is provided a folder type mobile telephone having anauxiliary or second display unit which is viewable whether the folder isopened or closed.

To further achieve at least the above objects in whole or in part, andin accordance with the purposes of the invention as embodied and broadlydescribed, there is provided a folder type mobile telephone having amain body including an auxiliary display unit, and a folder including amain display unit and an opening or cut-out allowing the auxiliarydisplay unit to be viewed when the folder is closed.

To further achieve at least the above objects in whole or in part, andin accordance with the purposes of the invention as embodied and broadlydescribed, there is provided a folder type mobile telephone including amain body having an auxiliary display unit, a folder having a maindisplay unit, and an opening or cut-out formed at a positioncorresponding to the auxiliary display unit when the folder is closed.The mobile telephone may also include a wheel button located at one sideof the main body to enter commands or information to the auxiliarydisplay unit.

To further achieve at least the above objects in whole or in part, andin accordance with the purposes of the invention as embodied and broadlydescribed, a folder type mobile telephone is provided on which anauxiliary display unit is located at one side of the main body of themobile telephone.

To further achieve at least the above objects in whole or in part, andin accordance with the purposes of the invention as embodied and broadlydescribed, there is provided an operating method for a folder typemobile telephone including connecting to an information network througha folder type mobile telephone and displaying titles for informationnetwork pages found by searching the information network, and displayingmessages or conversation content, for example, from email, bulletinboards, chat rooms, and other messaging systems.

Additional advantages, objects, and features of the invention will beset forth in part in the description which follows and in part willbecome apparent to those having ordinary skill in the art uponexamination of the following or may be learned from practice of theinvention. The objects and advantages of the invention may be realizedand attained as particularly pointed out in the appended claims.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention will be described in detail with reference to thefollowing drawings in which like reference numerals refer to likeelements wherein:

FIGS. 1A and 1B are drawings illustrating the structure of aconventional art folder type mobile telephone;

FIGS. 2A and 2B illustrate a folder type mobile telephone with anexposed auxiliary display unit in accordance with an embodiment of theinvention;

FIGS. 3A and 3B illustrate a folder type mobile telephone with aprotected auxiliary display unit in accordance with an embodiment of theinvention;

FIGS. 4A and 4B illustrate a folder type mobile telephone with anexposed auxiliary display unit in accordance with an embodiment of theinvention;

FIGS. 5A and 5B illustrate a folder type mobile telephone with anexposed auxiliary display unit in accordance with an embodiment of theinvention;

FIGS. 6A and 6B illustrate a folder type mobile telephone with aprotected auxiliary display unit in accordance with an embodiment of theinvention;

FIG. 7 is a block diagram of a folder type mobile telephone inaccordance with an embodiment of the invention;

FIG. 8 is a flow chart of an operating method of a folder type mobiletelephone in accordance with an embodiment of the invention;

FIGS. 9, 10 and 11 illustrate steps of an information network searchingmethod using a folder type mobile telephone in accordance with anembodiment of the invention; and

FIGS. 12, 13 and 14 illustrates steps of a chatting method using afolder type mobile telephone in accordance with an embodiment of theinvention.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

A folder type mobile telephone in accordance with an embodiment of theinvention includes an auxiliary display unit formed at a prescribedposition on a main body of the mobile telephone. The mobile telephonemay include an opening or cut-out formed on the folder in a positioncorresponding to the auxiliary display unit. The opening or cut-out ispositioned so that the auxiliary display unit is visible when the folderof the mobile phone is either opened or closed.

As shown in FIGS. 2 and 2B, a folder type mobile telephone in accordancewith an embodiment of the present invention may include a main body 100with an auxiliary display unit 110 located at an upper left corner of aninner surface of the main body. The mobile telephone may also include afolder 200 hinged at the main body 100 having an opening or cut-out 220positioned to view the auxiliary display unit 110 regardless of whetherthe folder 200 is opened or closed. A main display unit 210 located atan inner surface of the folder 200 may also be included in the mobiletelephone. A wheel button 120 may be additionally included on either theleft side or right side of the main body 100. The wheel button 120 maybe configured to enter commands or information to the auxiliary displayunit 110.

A keypad 130 including, for example, number keys, power keys andfunction keys may be included on a lower side of the auxiliary displayunit 110 on the inner surface of the main body 100. A microphone 140 maybe placed near the bottom of the main body 100. The folder 200 also mayinclude a speaker 230 and a main display unit 210 for displayinginformation.

The auxiliary display unit 110 makes the mobile telephone moreconvenient to use by displaying information such as reception strength,remaining battery capacity, whether a message has been received and thetime when the message was received, when the mobile telephone is in astandby mode or the folder 200 is otherwise closed. The auxiliarydisplay unit 110 may also augment the main display unit 210 when themobile telephone is in use.

FIGS. 3A and 3B illustrate an embodiment of the invention where atransparent window 220W is formed in or over the opening 220 of thefolder 200. The transparent window 220W protects the auxiliary displayunit 110, while allowing a user to view the auxiliary display unit 110when the folder 200 is closed.

As shown in FIGS. 4A and 4B, a folder type mobile telephone inaccordance with an embodiment of the invention includes a main body 100and an auxiliary display unit 110 located at a right upper end of theinner surface of the main body 100. The mobile telephone also includes afolder 200 hinged at the main body 100 having an opening or cut-out 220allowing the auxiliary display unit 110 to be viewed regardless ofwhether the folder 200 is opened or closed. A main display unit 210formed at an inner surface of the folder 200 may also be included on themobile telephone.

The mobile telephone may also include a wheel button 120 for controllingthe auxiliary display unit 110, and a transparent window 220W attachedon or within the opening 220 to protect the auxiliary display unit 110,while allowing a user to view the auxiliary display unit 110 regardlessof whether the folder 200 is opened or closed.

As shown in FIGS. 5A and 5B, a folder type mobile telephone inaccordance with an embodiment of the invention may include a main body100 and an auxiliary display unit 110 located in the middle of the upperend of the inner surface of the main body 100. The mobile telephone alsoincludes a folder 200 hinged at the main body 100 having an opening 220to view the auxiliary display unit 110 regardless of whether the folder200 is opened or closed. A main display unit 210 located at an innersurface of the folder 200 may also be included in the mobile telephone.A wheel button 120 may be provided on the main body 100 to assist incontrolling the auxiliary display unit 110.

FIGS. 6A and 6B illustrate a transparent window 220W located on orwithin the opening 220 of the folder 200 to protect the auxiliarydisplay unit 110 when the folder is closed.

As shown in FIG. 7, an embodiment of the folder type mobile telephone inaccordance with the invention may include a mobile station modem 500(MSM) for controlling the mobile telephone and for enabling telephonecalls and information network communications. The mobile telephone alsoincludes a duplexer 420 for separating signal transmissions to and froma base station through an antenna 410. A transmitting and receiving unit430 is coupled to the duplexer 420 for transmitting an internal signalof the mobile telephone as a radio frequency signal and receivingsignals through the antenna 410. Also included in the mobile telephoneis a keypad 130 for entering information and commands to the mobilestation modem 500.

A main display unit 210 is provided on the mobile telephone fordisplaying, for example, mobile telephone status and other informationto the user according to control and information inputs. An auxiliarydisplay unit 110 on an inner surface of the main body is also providedto augment the unit display unit 210, as well as to allow the user toview mobile telephone information when the folder is either opened orclosed. A CODEC 510 provided for coding a voice signal received from amicrophone 140, and for decoding an output signal of the MSM 500 andoutputting the decoded signal to the speaker 230, is coupled to the MSM500. A wheel button 120 is also included to enter user commands andinformation to the auxiliary display unit 110.

The transmitting and receiving unit 430 of the mobile telephone includesan RF transmitting unit 431 for modulating a signal received from theMSM 500 and through an interface 440 into an RF signal, and foroutputting the modulated signal through the duplexer 420, to betransmitted by the antenna 410. An RF receiving unit 432 is provided fordemodulating an RF signal received through the antenna 410 and theduplexer 420. The RF receiving unit outputs the demodulated signal tothe MSM 500 through the interface 440.

The main display unit 210 is augmented by the auxiliary display unit110. Accordingly, when the folder is opened and a text message isdisplayed on the main display unit 210 or another operation is beingperformed by the main display unit 210, the auxiliary display unit 110can display, for example, time as well as other information. Theauxiliary display unit 110 can also display, for example, informationnetwork page search history for pages opened using a wirelessinformation network so that the user can directly move to a desiredinformation network page on the main display unit 110. When theauxiliary display unit 110 is used to display messages, such as chatmessage content, when the user is chatting on a information network, anda previously inputted word or sequence of words is to be repeated, thecorresponding words can be selected from among the displayed words andinputted in order to make such conversation mote efficient. During suchan input operation, the wheel button 120 can be rotated to scrollthrough characters, words of information network pages or chat messagecontent without multiple time consuming keypad inputs.

An operation method of the folder type mobile telephone according to anembodiment of the invention is shown in FIG. 8. In step S1, when thefolder of the folder type mobile telephone is opened, and the mobiletelephone is in standby mode to receive signals, the mobile telephonedetermines whether a user is connected to the internet as theinformation network. In step S2, if the mobile telephone determines theuser is not connected to a wireless information network, the mobiletelephone performs, for example, standard mobile telephone, pager, orother messaging system functions in accordance with instructionsinputted from the user.

In step S3, if the mobile telephone determines that the user isconnected to a wireless information network, the mobile telephone checkswhether the user has entered commands to enable chatting on theinformation network through the mobile telephone. In step S4, if theuser has not entered commands to enable chatting on the informationnetwork, the auxiliary display unit 110 of the mobile telephone isswitched to function as an information network search history window toallow the user to view search results while searching the informationnetwork. In step S5, if the user has selected the internet chat mode,the auxiliary display unit 110 is configured to function as aconversation input window.

In step S6, when the user terminates a chat session or informationnetwork search session, the mobile telephone checks whether the user hasentered commands to terminate the mobile telephone's connection to theinformation network. Further in step S6, at the end of a chat session oran internet search, if the user does not terminate the informationnetwork connection, the mobile telephone performs the step of checkingwhether the user has entered commands to search the information network.

In step S7, at the end of a chat session or an network search, if theuser selects to terminate the connection to the information network, theauxiliary display unit 110 is switched to a standby mode. In the standbymode, the auxiliary display unit 110 may be configured for displayingmessaging or calling information, type of display node, remainingbattery capacity, current time etc., as well as information relating tothe initiation of such operations.

FIGS. 9, 10 and 11 show an information network searching method for afolder type mobile telephone in accordance with an embodiment of theinvention in which the auxiliary display unit 110 displays searchhistory when searching an information network. As in other embodiments,the folder type mobile telephone includes a main display unit 210 fordisplaying a current information network page, and an auxiliary displayunit 110 for displaying titles of pages previously searched by the user.The mobile telephone may also include a first history database 300 a anda second history database 300 b for storing information networkaddresses, such as URLs from the internet, corresponding to pagesassociated with titles displayed on the auxiliary display unit 110.These history databases 300 a and 300 b maybe included in a memory 300.

Addresses of each information network page accessed by the user throughthe information network maybe sequentially stored in the first historydatabase 300 a. Another lower level set of addresses of the informationnetwork pages, accessed when a back command is executed, may be storedin the second history database 300 b.

FIG. 9 illustrates how a user may sequentially search a first, second,third, fourth, and fifth information network page through keypad inputswhile simultaneously displaying the contents of a particular page on adisplay. For example, the content corresponding to the fifth informationnetwork page may be displayed on the current main display unit 210,while the titles of first, second, third and fourth information networkpages are sequentially displayed on the auxiliary display unit 110. Toconserve memory 300, the MSM 500 sequentially stores the addresses ofthe first, second, third and fourth information network page in thefirst history database 300 a, but does not store any addresses of thesearched information network pages in the second history database 300 b.

FIGS. 10 and 11 illustrate a method of using the auxiliary display unit110 of the folder type mobile telephone in accordance with an embodimentof the invention. In particular, as shown in FIG. 10, when a userselects an address of, for example, a third information network page,the address of the third information network page from among the historylist is displayed on the auxiliary display unit 110 by wheel buttoninputs. When such a selection is made, the mobile station modem 500,which has received the output signal of the wheel button, displays thethird information network page on the main display unit 210.Additionally, the MSM 500 sequentially displays the titles of the first,second, four, and fifth information network pages on the auxiliarydisplay unit 110. The MSM 500 also sequentially stores the addresses ofthe first and second information network pages in the first historydatabase 300 a of the memory 300. The addresses of the fourth, and fifthinformation network pages in the second history database 300 b of thememory 300 are also sequentially stored by the MSM 500.

FIG. 11 illustrates a method of searching an information network inaccordance with an embodiment of the invention in which the usersearches a new information network page trough the keypad 130. As shownin FIG. 11, when the user doing such a search sequentially searches newsixth and seventh information network pages by keypad inputs, theseventh information network page is displayed on the main display unit210. Additionally, titles of the first, second, third and sixthinformation network pages are displayed on the auxiliary display unit110. Thus, when the user is connected to the new information networkpage, the content of the second history database 300 b is deleted andthe content of the connected information network page is stored in thefirst history database 300 a.

Accordingly, when the user's connection is changed from the thirdinformation network page to the sixth and seventh information networkpages, the addresses of the first, second, third and sixth informationnetwork pages are stored in the first history database 300 a, and theaddresses of the fourth and fifth information network pages stored inthe second history database 300 b are deleted. Furthermore, when theuser is again connected to the third information network page, theaddress of the sixth information network page is stored in the secondhistory database 300 b, and addresses of the first and secondinformation network pages remain in the first history database 300 a.

FIGS. 12, 13 and 14 illustrate an information network chatting methodusing a folder type mobile telephone in accordance with an embodiment ofthe invention. In particular, FIG. 12 illustrates an embodiment inaccordance with the invention in which the auxiliary display unit 110 isused as a conversation input window during information network chatting.The folder type mobile telephone includes a main display unit 210 fordisplaying conversation content during the information network chat.

An auxiliary display unit 110 for displaying a conversation which hasbeen inputted in the main display unit 210 is also included in thefolder type mobile telephone. At the upper end of the auxiliary displayunit 110, the most recently inputted conversation content is displayed.That is, in the auxiliary display unit 110, the recent conversationinput content is displayed at the upper end of an input cursor, and aprior conversation content is displayed at a lower end of the inputcursor. In such a configuration, the user selects the conversationcontent displayed on the auxiliary display unit 110 and inputs it intothe main display unit 210. The conversation input content, up to theallocated memory size, is then stored in the memory 300 during networkchatting.

Referring to FIG. 13, an embodiment in which the auxiliary display unit110 is utilized through the wheel button 120 is shown in accordance withthe invention. When the user actuates the wheel button 120, the usermoves the cursor of the auxiliary display unit 110 by scrolling thewheel button 120 up and down. In response to scrolling the wheel button120, the conversation contents which have been inputted into the maindisplay unit 210 through the keypad and stored in the memory aredisplayed in input order. During such scrolling, the more recentlyinputted conversation content is displayed at the upper end of theauxiliary display unit 110, and the prior inputted conversation contentis displayed at the lower end of the auxiliary display unit 110. Thus,when the user scrolls the wheel button 120 up, the cursor is movedtowards the more recent conversation content. When the user scrolls thewheel button 120 down, the cursor is moved towards the older inputtedconversation content.

The conversation content at which the cursor is positioned may beentered into the main display unit 210 according to selection by theuser. For example, after a first user inputs a conversation “Hello” and“I am John Doe” through the keypad, and a new person begins toparticipate in the chat, the first user selects the message “Hello”displayed on the auxiliary display unit 110 with the wheel button 120 toinput it into the main display unit 210. Thus, instead of inputting anew “Hello” message through the keypad, the first user can designate a“Hello” message displayed on the auxiliary display unit 110 from thepreviously inputted messages and input it on the main display unit 210as a response.

FIG. 14 illustrates an embodiment of the wheel button in accordance withthe invention. In operation, whenever the wheel button is scrolledthrough a step, the cursor is moved up or down a line. Accordingly, byscrolling the wheel button, the messages displayed on the auxiliarydisplay unit 110 and the cursor are scrolled up and down, line by line,in response to the scroll inputs.

The folder type mobile telephone according to the invention has manyadvantages. For example, the folder type mobile telephone is configuredso that the user can view the auxiliary display screen regardless ofwhether the mobile telephone folder is opened or closed. Thus,accessibility and usefulness of the auxiliary display unit 110 isincreased. Another advantage is that because the utilization of theauxiliary display unit is improved by installing the wheel button, whena user chats over an information network, keyboard use is reduced byreusing previously inputted messages via wheel button inputs. Anotheradvantage is that searches on an information network are more convenientbecause a previously searched information network page can be easilysearched again via wheel button inputs. Finally, since the auxiliarydisplay unit 110 is attached to the main body of the mobile telephone,the relative thickness of the folder can be reduced, so that the overallsize of the mobile telephone is reduced.

The foregoing embodiments and advantages are merely exemplary and arenot to be construed as limiting the invention. The present teaching canbe readily applied to other types of apparatuses. The description of theinvention is intended to be illustrative, and not to limit the scope ofthe claims. Many alternatives, modification, and variations will beapparent to those skilled in the art. In the claims, means-plus-functionclauses are intended to cover the structures described herein asperforming the recited function and not only structural equivalents butalso equivalent structures.

1. An operating method for a telephone, comprising: connecting to aninformation network through a telephone; searching the informationnetwork through the telephone, wherein titles corresponding toinformation network pages found by searching the information network aredisplayed on a first display on the telephone, and wherein searching theinformation network comprises: sequentially displaying titles ofinformation network pages found by searching the information network ona second display; selecting a title of an information network page fromamong the displayed titles; and displaying a content of the selectedinformation network page on the first display.
 2. The method of claim 1,wherein the telephone is a mobile telephone.
 3. The method of claim 1,wherein searching the information network further comprises:sequentially storing addresses of each found information network page ina first history database; and storing lower addresses of the informationnetwork page accessed according to a back command in a second historydatabase.
 4. The method of claim 3, wherein if the user moves to a newinformation network page that does not exist in the history list, theaddresses stored in the second history database are deleted.
 5. Themethod of claim 1, further comprising: chatting on the informationnetwork through the telephone, wherein a message input in chatting isdisplayed on the first display on the telephone.
 6. The method of clam5, wherein chatting on the information network further comprises:displaying an input message on the second display; and selecting amessage displayed on the second display, wherein the selected message isdisplayed on the first display.
 7. The method of claim 6, wherein themost recently input message is displayed in an upper portion of thesecond display.
 8. The method of claim 1, wherein searching theinformation network comprises: entering commands into the telephonecausing the telephone to retrieve first search results from theinformation network; displaying a first portion of the first searchresults on the first display on the telephone; storing a second portionof the first search results in a first memory; entering commands intothe telephone causing the telephone to retrieve second search resultsfrom the information network; displaying a first portion of the secondsearch results on the first display; displaying the first portion of thefirst search results on the second display; storing a second portion ofthe second search results in the first memory; and storing the secondportion of the first search results in a second memory.
 9. The method ofclaim 8, wherein searching the information network comprises: displayinga search history on the second display.
 10. The method of claim 8,wherein entering commands comprises inputs from a keyboard.
 11. Themethod of claim 8, wherein entering commands comprises input from awheel button.
 12. The method of claim 8, wherein the second display isswitched to a standby mode if the search is terminated.
 13. A method tochat on an information network with a mobile telephone, comprising:determining if the mobile telephone is connected to the informationnetwork; entering chat commands if the mobile telephone is connected tothe information network; displaying chat messages if the mobiletelephone is connected to the information network; performing telephonecall transmission and reception if the mobile telephone is not connectedto the information network; and searching the information networkthrough the mobile telephone if the mobile telephone is connected to theinformation network, wherein titles corresponding to information networkpages found by searching the information network are displayed on afirst display on the telephone, and wherein searching the informationnetwork comprises: sequentially displaying titles of information networkpages found by searching the information network on a second display;selecting a title of an information network page from among thedisplayed titles; and displaying a content of the selected informationnetwork page on the first display.
 14. The method of claim 13, whereinthe first display shows current input chat message content and thesecond display shows prior chat message content.
 15. The method of claim14, wherein a portion of chat message content displayed on the seconddisplay can be selected and input as current input chat message contenton the first display.
 16. The method of claim 15, wherein commands areentered via a wheel button.
 17. The method of claim 14, furthercomprising storing chat message content in a memory.
 18. The chat methodof claim 14, wherein the second display is switched to a standby mode ifthe chat is terminated.
 19. An operating method for a telephone having afirst display and a second display, comprising: determining whether thetelephone is connected to an information network; if the telephone isconnected to an information network, determining whether a user hasentered commands to enable chatting on the information network throughthe telephone thereby selecting an Internet chat mode; if the user hasselected the Internet chat mode, enabling the second display as aconversation input window; if the user has not selected the Internetchat mode, enabling the second display to function as a search historywindow allowing a user to view search results while searching theinformation network on the first display in a search mode, furthercomprising, in the search mode: sequentially displaying titles ofinformation network pages found by searching the information network onthe second display; selecting a title of an information network pagefrom among the displayed titles; and displaying a content of theselected information network page on the first display.
 20. The methodof claim 19, wherein the telephone is a mobile telephone.
 21. The methodof claim 19, further comprising: performing a telephone call function ora message transmission or reception function if a user is not connectedto an information network.
 22. The method of claim 19, furthercomprising, in the search mode: sequentially storing addresses of eachfound information network page in a first history database; and storinglower addresses of the information network page accessed according to aback command in a second history database.
 23. The method of claim 22,wherein if the user moves to a new information network page that doesnot exist in the history list, the addresses stored in the secondhistory database are deleted.
 24. The method of claim 19, furthercomprising in the Internet chat mode: displaying an input message on thesecond display; select a message displayed on the second display; anddisplaying the selected message on the first display.
 25. The method ofclaim 24, wherein the first display shows current chat message contentand the second display shows prior chat message content.
 26. The methodof claim 25, wherein a portion of chat message content displayed on thesecond display can be selected and input as current input chat messagecontent on the first display.
 27. The method of claim 25, furthercomprising, in the Internet chat mode: storing chat message content in amemory.
 28. An operating method for a telephone, comprising: connectingto an information network through a telephone; searching the informationnetwork through the telephone, wherein titles corresponding toinformation network pages found by searching the information network aredisplayed on a first display on the telephone, and wherein searching theinformation network comprises: entering commands into the telephonecausing the telephone to retrieve first search results from theinformation network; displaying a fast portion of the first searchresults on the first display on the telephone; storing a second portionof the first search results in a first memory; entering commands intothe telephone causing the telephone to retrieve second search resultsfrom the information network; displaying a first portion of the secondsearch results on the first display; displaying the first portion of thefast search results on a second display; storing a second portion of thesecond search results in the first memory; and storing the secondportion of the first search results in a second memory.
 29. The methodof claim 28, wherein searching the information network comprises:displaying a search history on the second display.
 30. The method ofclaim 28, wherein entering commands comprises inputs from a keyboard.31. The method of claim 28, wherein entering commands comprises inputfrom a wheel button.
 32. The method of claim 28, wherein the seconddisplay is switched to a standby mode if the search is terminated.